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Experienced extension builder ready to quote for your work. WDC LTD T/A is the best extension builder in Basildon. No obligation free quotes and ma...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Darren Spencer
Need an Extension Builder in Basildon? Ellis & James Builders Limited has been helping local clients (20 mile radius) with their extension builderi...
Lovehome Construction is an established and experienced local extension builder in Basildon. Please contact us for a free, no obligation quote and ...
CLYDESDALE CONSTRUCTION LTD is an established extension buildering business in Basildon. We come highly recommended and provide competitive quotes ...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Experienced extension builder ready to quote for your work. Keith Andrews Building is the best extension builder in Basildon. No obligation free qu...
P OUGHTON BUILDING is an established and experienced local extension builder in Basildon. Please contact us for a free, no obligation quote and com...
Basildon, SS14
Witton & Pearce Builders in Essex is a trusted extension builder serving customers in Basildon and the surrounding area. Contact us to today to get...
Billy Baverstock
Basildon, SS13
Experienced extension builder ready to quote for your work. Capital Roofing Ltd is the best extension builder in Basildon. No obligation free quote...

A flat roof extension ranges from the cheapest of £21,456 (Capital Roofing Ltd based in SS13) to the dearest of £22,360 (Ellis & James Builders Limited based in SS17), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in Basildon by posting a job with HaMuch. We'll send it to extension builders in Basildon.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Basildon | £39 | £251 |
| Build A Flat Roof Extension near Wickford | £39 | £255 |
| Build A Flat Roof Extension near Billericay | £38 | £248 |
| Build A Flat Roof Extension near Stanford-le-Hope | £40 | £254 |
| Build A Flat Roof Extension near Thundersley | £38 | £251 |
| Build A Flat Roof Extension near Rayleigh | £39 | £252 |
| Build A Flat Roof Extension near Canvey Island | £39 | £256 |
| Build A Flat Roof Extension near Brentwood | £39 | £255 |
| Build A Flat Roof Extension near Thurrock | £41 | £260 |
| Build A Flat Roof Extension near Chafford Hundred | £41 | £261 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £17,580

Two storey extension - £88,120

Build a timber frame extension - £26,080

Build a swimming pool - £81,080

Single storey extension - £56,600

Side return extension - £42,400

Install an RSJ - £2,280

Outbuilding - £10,080

Build a Mansard loft conversion - £52,080

Loft conversion - £34,500

Build a kitchen extension - £42,080

Hip to gable loft conversion - £42,080

Granny annexe - £87,080

Garden office - £10,080

Convert a Garage - £16,080

Garage - £18,580

Build a flat roof extension - £22,080

Build a dormer loft conversion - £42,080

Concrete foundations - £6,330

Convert a bungalow loft - £29,080

Convert a basement - £38,400